intrusion

noun

in·​tru·​sion in-ˈtrü-zhən How to pronounce intrusion (audio)
1
: the act of intruding or the state of being intruded
especially : the act of wrongfully entering upon, seizing, or taking possession of the property of another
2
: the forcible entry of molten rock or magma into or between other rock formations
also : the intruded magma

Examples of intrusion in a Sentence

Recent Examples on the Web Many audience members believed the intrusion was part of the production. Chloe Veltman, NPR, 5 Apr. 2024 The Fourth Amendment is one of the most basic rights people in the United States enjoy, providing a bulwark against government intrusion. Jonathan Shorman, Kansas City Star, 4 Apr. 2024 Implementing Robust Security Measures: Firewalls, intrusion detection systems and data encryption are the building blocks of a strong defense. Chris Schueler, Forbes, 27 Mar. 2024 The intrusion of smartphones and social media are not the only changes that have deformed childhood. Jonathan Haidt, The Atlantic, 13 Mar. 2024 Assange is facing 17 charges for allegedly receiving, possessing and communicating classified information to the public under the Espionage Act, and one charge alleging a conspiracy to commit computer intrusion. Landon Mion, Fox News, 3 Mar. 2024 The motive behind the British intrusion was more mysterious. Mark Landler, New York Times, 25 Mar. 2024 Driven by last summer's drought, extreme heat, saltwater intrusion on the Mississippi River and a hard winter freeze, the nation’s top producer of crawfish harvested a fraction of what is typical of the tiny crustaceans in a season — with tens of thousands of acres lost or failing. Sara Cline, Quartz, 22 Mar. 2024 Last year’s drought, extreme heat, saltwater intrusion on the Mississippi River, and a hard winter freeze have devastated this year’s crawfish harvest, Associated Press reports. Meghan Overdeep, Southern Living, 7 Mar. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'intrusion.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

Middle English, from Anglo-French, from Medieval Latin intrusion-, intrusio, from Latin intrudere

First Known Use

15th century, in the meaning defined at sense 1

Time Traveler
The first known use of intrusion was in the 15th century

Dictionary Entries Near intrusion

Cite this Entry

“Intrusion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/intrusion. Accessed 20 Apr. 2024.

Kids Definition

intrusion

noun
in·​tru·​sion in-ˈtrü-zhən How to pronounce intrusion (audio)
1
: the act of intruding : the state of being intruded
2
: the entry by force of melted rock into or between other rock formations

Legal Definition

intrusion

noun
in·​tru·​sion in-ˈtrü-zhən How to pronounce intrusion (audio)
1
a
: the entry at common law of a stranger after a particular estate of freehold is determined before the person who holds it in remainder or reversion has taken possession
b
: the act of wrongfully entering upon, seizing, or taking possession of the property of another
2
: a trespassing on or encroachment upon something (as a right)
the Fourth Amendment demands that the showing of justification match the degree of intrusionBerger v. New York, 388 U.S. 41 (1968)
Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!